Diagnosis
You assigned method &V1& totask &V2&. Either thismethod does not exist, or it has the wrong method category. Therefore,you cannot use this method.
Method &V1& does not necessarily need to belong to theperiod category that iscurrently being displayed; this method can also belong to another periodcategory.
Note the following concerning balance carryforward tasks: Tobalance carryforward tasks you can only assign methods with the methodcategory currency translation method.

Procedure
List the possible entries and choose a suitable method for task &v2&.